Antistatic polymer composition
AssigneeTicona LLC
InventorYoung Shin Kim
Life of this patent
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Abstract
A polymer composition having a reduced tendency to create a static electric charge during a molding operation is provided. More particularly, the composition contains an ionic liquid that is distributed within a polymer matrix that contains an aromatic polymer. In addition to being electrically conductive, the ionic liquid can exist in liquid form during melt processing, which allows it to be more uniformly blended within the aromatic polymer matrix. This improves electrical connectivity and thereby enhances the ability of the composition to rapidly dissipate static electric charges from its surface.
Claims15
A camera module that comprises a molded part and a lens assembly, wherein the molded part comprises a polymer composition comprising a fibrous filler that contains glass fibers, the polymer composition further comprising an ionic liquid distributed within a polymer matrix, the polymer matrix including an aromatic polymer having a glass transition temperature of about 100° C. or more, and wherein the aromatic polymer is a polyamide and is present in the composition in an amount of from about 30 wt. % to about 80 wt. % of the composition, the ionic liquid is present in the composition in an amount of from about 0.3 wt. % to about 5 wt. % of the composition, and the glass fibers are present in the composition in an amount of from about 5 wt. % to about 40 wt. % of the composition, further wherein the composition exhibits a melt viscosity of from about 0.1 Pa·s to about 80 Pa·s as determined at a shear rate of 1000 seconds−1 in accordance with ISO Test No. 11443 at a temperature that is 15° C. higher than the melting temperature of the composition, and wherein the molded part exhibits a surface resistivity of about 1×1015 ohms or less as determined in accordance with IED 60093.
Dependencies are inferred from the claim text.